SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for oba-o.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- oba-o.fr
- Valid from
- Oct 4, 2026
- Valid until
- Jan 2, 2027 (53 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06EEBA40928949C0E17474F2F1A63EFAF189
- SHA-256 fingerprint
- 23:4E:3F:EF:74:1E:CC:C3:CB:E4:D0:FD:CB:7E:75:0A:DD:47:E0:0D:4D:34:32:BC:1E:0D:25:D2:50:26:C8:06
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Nov 6, 2026.
Never get surprised by oba-o.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch oba-o.fr continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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